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JPL Small-Body Database Browser
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C/1921 H1 (Dubiago)
Classification: Halley-type Comet* [NEO]          SPK-ID: 1000024
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design ]

[ show orbit diagram ]
Orbital Elements at Epoch 2422830.5 (1921-May-21.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9347381639360419 0.0014783  
a 17.10222288614106 0.39182 au
q 1.11612246632461 0.00028923 au
i 22.3454025246227 0.0041799 deg
node 67.12734511237147 0.017378 deg
peri 97.48133618992105 0.0086444 deg
M .2176592317677754 0.0076238 deg
tp 2422814.881049042156
(1921-May-05.38104904)
0.010806 TDB
period 25833.14431074962
70.73
887.78
2.431
d
yr
n .01393558583769447 0.00047891 deg/d
Q 33.08832330595752 0.75808 au
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      40 days  
   first obs. used      1921-04-29  
   last obs. used      1921-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      1.414  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:29:02  

Additional Information
 Earth MOID = .3835 au 
 Jupiter MOID = .817463 au 
 T_jup = 1.496 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design ]

no physical parameters available

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1921.3   C/1921 H1   1921 I   1921c 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design ]
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